Impacts of fertilizer practices on environmental risk of nitrate in semiarid farmlands in the Loess Plateau of China

Guo, Shengli; Wu, Jinshui; Dang, Tinghui; Liu, Wenzhao; Li, Yong; Wei, Wenxue; Syers, J. K.

doi:10.1007/s11104-009-0204-x

Cited by 51 publications

(22 citation statements)

References 35 publications

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“…This indicated that, except for that at 0 kg N ha −1 (maintained at 57 kg ha −1 ), NR was present in the soil and gradually accumulated, even at N rates as low as 80 kg N ha −1 . A similar phenomenon was also shown in the work of Guo et al (2010). In the North China Plain, nitrate-N successively accumulated in the top 100 cm of soil over two years, with average yearly increases as high as 48, 187, and 255 kg N ha −1 corresponding to N applications of 120, 240, and 360 kg N ha −1 in a winter wheat and maize system (Liu et al, 2003).…”

Section: Residual Nitrate-n In Soil At Harvestsupporting

confidence: 81%

Optimizing nitrogen input by balancing winter wheat yield and residual nitrate-N in soil in a long-term dryland field experiment in the Loess Plateau of China

Dai

Wang

et al. 2015

Field Crops Research

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Section: Residual Nitrate-n In Soil At Harvestsupporting

confidence: 81%

Optimizing nitrogen input by balancing winter wheat yield and residual nitrate-N in soil in a long-term dryland field experiment in the Loess Plateau of China

Dai

Wang

et al. 2015

Field Crops Research

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“…We found that residual N, as Downloaded by [New York University] was expected, increased with added manure and sewage sludge, as it was dependent on the added available N, but this increase was not proportional compared to the level of added N (Figure 3). Other works have also found this nonproportional NO 3 -N rootzone accumulation in organic amendment treatments compared to conventional fertilizers (e.g., Guo et al 2010). In the first year SS-2 and SS-3 were significantly different from the control, whereas in the second year M-2 (along with the former two treatments) was also different from the control.…”

supporting

confidence: 51%

Nitrogen, Phosphorus, and Potassium Availability in Manure- and Sewage Sludge–Applied Soil

Antoniadis

Koutroubas

Fotiadis

2015

Communications in Soil Science and Plant Analysis

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A field experiment with wheat (Triticum aestivum L.) was established over two growing seasons where farmyard manure and sewage sludge, along with conventional fertilizer, were added to soil. We found that ammonium N was at greater concentrations in the organic amendments treatments, indicating more beneficial dynamics (i.e., it can be taken up by plants for a greater amount of time) and thus a longer lasting effect as a nutrient for the test crop. We found that nitrogen (N), phosphorus (P), and potassium (K) uptake increased with added organic amendments. This means that when organic matter along with nutrients are added to soil, productivity may increase beyond preset targets because soil conditions greatly improve, not only chemically but also physically. Nitrates left over at the end of the growing season (residual N) were greater in the high sewage sludge and manure treatments, but not proportionally.

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“…Guo et al . 22 found that N fertilizers coupled with farm yard manure resulted in 70% less NO 3 − -N accumulation in the soil profiles than that using mineral N fertilizer alone. However, some researches had found that manure applications without any pretreatment could cause serious NO 3 − -N leaching 23,24 .…”

Section: Introductionmentioning

confidence: 94%

Effect of different organic fertilizers application on growth and environmental risk of nitrate under a vegetable field

Zhang

et al. 2017

Sci Rep

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The effect of chicken manure after different disposal methods (water-logged composting, GOF; anaerobic digestion, BR; thermophilic composting, ROF) on vegetable growth and environmental risk was investigated under the tomato-celery-tomato field. Results showed that organic fertilizers significantly increased vegetable yield and quality, but with inappropriate application may cause serious environmental risk such as nitrate pollution. Maximum vegetable yield of 80.9, 68.3, 112.7 t·ha−1 (first, second and third rotation crop, respectively) with best vegetable quality was obtained in ROF treatment. The highest N use efficiency with the least nitrate enrichment in soil was also found in ROF treatment. Moreover, under this fertilization way, nitrate concentration in soil leachate dropped to 6.4 mg·L−1, which satisfied the threshold (<10 mg·L−1) for drinking water set by the US Environmental Protection Agency. Thus, ROF was suggested to be the optimal fertilizer with the best yield, quality and the least environmental risk under the “tomato-celery” rotation system.

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Impacts of fertilizer practices on environmental risk of nitrate in semiarid farmlands in the Loess Plateau of China

Abstract: The lack of understanding of nitrate dynamics in soil profiles of semiarid regions hampers the assessment of the environmental risks associated with nitrate.

Cited by 51 publications

References 35 publications

Optimizing nitrogen input by balancing winter wheat yield and residual nitrate-N in soil in a long-term dryland field experiment in the Loess Plateau of China

Optimizing nitrogen input by balancing winter wheat yield and residual nitrate-N in soil in a long-term dryland field experiment in the Loess Plateau of China

Nitrogen, Phosphorus, and Potassium Availability in Manure- and Sewage Sludge–Applied Soil

Effect of different organic fertilizers application on growth and environmental risk of nitrate under a vegetable field

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